True, Homey Pro 2019 is bad with sending more than a few commands at once.
No clue how Pro 2023 handles that
Another way besides adding delays is, in Advanced flow, you can daisy-chain your action cards (connect the input for the 2nd card to the output of the 1st card and so on) so they won’t get fired at once, but one after the other.
Other option: create a group device with all your devices you want to control with this flow. The group members are not fired at once, but in sequence so to speak
